Locational relationship between corpus luteum and ovulatory follicle on ovaries alters follicular dynamics and progesterone concentrations of Thai indigenous beef cows exhibiting two follicular waves

2019 ◽  
Vol 59 (12) ◽  
pp. 2161
Author(s):  
P. Yama ◽  
T. Moonmanee ◽  
M. Osathanunkul ◽  
J. Jitjumnong ◽  
W. Karaphuak
Keyword(s):  
Growth Rate ◽  
Corpus Luteum ◽  
Beef Cows ◽  
Follicular Waves ◽  
Ultrasound Monitoring ◽  
Ovulatory Follicle ◽  
The Mean ◽  
The Impact ◽  
The Relationship ◽  
Follicular Dynamics

The present study aims to determine the impact of differences in the locational relationship between the previous corpus luteum (CL) and the further ovulatory follicle (OF) on follicular dynamics and progesterone (P4) concentrations in Thai indigenous beef cows (White Lamphun) exhibiting two follicular waves. Twenty-one cows, exhibiting the two-wave follicular pattern, were studied through interovulatory intervals (IOI), and classified according to the relationship between the previous CL and the further OF on the cattle model ovaries. Classifications were outlined as either an ipsilateral (same ovary) relationship (n = 12), or a contralateral (opposite ovaries) relationship (n = 9). Ultrasound monitoring, which evaluated the follicular diameter, and collection of blood for determining the P4 concentration were performed each day throughout the IOI. The IOI was longer (P < 0.05) in the contralateral cows than in the ipsilateral cows (19.7 ± 0.33 days vs 18.5 ± 0.29 days). Cows with an ipsilateral relationship were found to have further OFs with greater (P < 0.05) diameters than were cows with a contralateral relationship (13.9 ± 0.31 mm vs 12.1 ± 0.21 mm). The mean growth rate of the further OF was greater (P = 0.05) in the ipsilateral cows than in the contralateral cows (1.1 ± 0.11 mm/day vs 0.8 ± 0.04 mm/day). On Day 17 of the IOI, the ipsilateral cows demonstrated their lowest concentration of P4 (P < 0.05). On Day 18 of the IOI, the concentrations of P4 tended to be lower (P = 0.09) in the ipsilateral cows than in the contralateral cows (0.6 ± 0.04 ng/mL vs 1.1 ± 0.12 ng/mL). The interval from the luteinisation until the end of the luteolysis was longer (P < 0.05) in the contralateral group than in the ipsilateral group (18.5 ± 0.50 days vs 16.7 ± 0.33 days). Thus, we conclude that in Thai indigenous beef cows, the growth rate and diameter of the further OF during luteolysis increases more in the ipsilateral relationship than in the contralateral relationship.

A study of the relationship between plane of nutrition during lactation and certain production characteristics in autumn-calving suckler cows

1983 ◽  
Vol 37 (3) ◽  
pp. 353-363 ◽  
Author(s):  
S. H. Somerville ◽  
B. G. Lowman ◽  
R. A. Edwards ◽  
G. Jolly
Keyword(s):  
Growth Rate ◽  
Compensatory Growth ◽  
Live Weight ◽  
Beef Cows ◽  
Metabolizable Energy ◽  
Condition Score ◽  
The Mean ◽  
Daily Intakes ◽  
The Relationship ◽  
Production Characteristics

ABSTRACTHereford ♂ × British Friesian ♀ cows that had calved in September/October and were suckling mainly Charolais ♂ × calves were offered individually one of three planes of nutrition based on their estimated maintenance requirement during their first 150 days of lactation.The mean daily intakes of metabolizable energy were 95·8, 71·5 and 52·1 MJ for the high, medium and low planes of nutrition respectively. Data were collected from 122 lactations. The mean 150-day cumulative milk yields of the cows were 1 355, 1 258 and 1 187 kg for the high, medium and low planes of nutrition respectively (P < 0·001). A i-kg increase in calf birth weight was associated with an increase in 150-day cumulative milk yield of 14·7 ± 2·17 kg (P < 0·001). Losses in live weight and condition score were significantly greater for cows given the low plane of nutrition during lactation (P < 0001).Although there was a significant (P < 0·01) positive correlation between the growth rate of the calves and their dams' nutritional level during the winter there was evidence of compensatory growth at grass, since by the time of weaning in August, the plane of nutrition of the dam during the winter had no significant effect on the weight of the calves.The experiment demonstrates that energy-deficient beef cows will attempt to maintain milk production at the expense of body reserves and that when supplementary solid food is made available to the suckled calves, their weaning weights are unaffected by the plane of nutrition of the dam during the winter.

scholarly journals Comparación ultrasonográfica transvaginal y transrectal de la dinámica folicular en ondas sucesivas de llamas (Lama glama)

2021 ◽  
Vol 32 (1) ◽  
pp. e19504
Author(s):  
Uri Perez G. ◽  
David Pari P. ◽  
Fidel Gutierrez Y. ◽  
Julio Málaga A. ◽  
Natalio Luque M. ◽  
...  
Keyword(s):  
Growth Rate ◽  
Negative Correlation ◽  
Reproductive Season ◽  
Maximum Diameter ◽  
Follicular Waves ◽  
Follicular Wave ◽  
Linear Transducer ◽  
Lama Glama ◽  
The Relationship ◽  
Follicular Dynamics

La dinámica folicular ovárica monitoreada por vía transrectal (TR) y transvaginal (TV) en ondas sucesivas en llamas fue estudiada en 10 llamas con más de 4 años, multíparas, sin cría, estado corporal de 3.0, durante un periodo de 90 días en la época reproductiva. Se utilizó el ecógrafo Sonostar SS8® con un transductor lineal para el examen transrectal y transductor microconvexo endocavitario para el examen transvaginal, ambos con frecuencia de 6.5 MHz. El intervalo inter-onda fue de 20±4.4 y 22.5±5.3 por vía TR y TV, respectivamente; el número de folículos por cohorte fue 5.21±0.92 y 6.38±1.26 para TR y TV, respectivamente (p=0.0011); el diámetro máximo de folículos fue 12.49±3.57 mm para TR y 13.56±3.91 mm para TV; la tasa de crecimiento fue de 0.70±0.35 y 0.67±0.32 mm/día para TR y TV, respectivamente. La ecuación de regresión para relación del diámetro máximo folicular y duración de onda folicular vía TR fue de y=0.89766x+6.5554 (R²=0.423) y para la vía TV de y=0.8466x+10.184 (R²=0.479). La duración de las fases foliculares fue similar entre ambas técnicas con excepción de la fase de dominancia (10.2±3.19 días para TR y 8.67±2.46 para TV, p=0.0418). La relación entre el diámetro folicular y número de folículos detectados presentó una correlación negativa baja (R²=-0.0827 para TV y R²=-0.0876 para TR). En conclusión, el transductor endocavitario transvaginal permite determinar con mayor precisión las características de dinámica folicular en llamas en sus fases de reclutamiento, dominancia y regresión con sobreposición de ondas foliculares como característica importante.The ovarian follicular dynamics monitored by transrectal (TR) and transvaginal (TV) routes in successive waves was studied in 10 llamas older than 4 years, multiparous, without calves at foot, body condition of 3.0, during a period of 90 days in the reproductive season. The Sonostar SS8® ultrasound equipment was used with a linear transducer for transrectal examination and endocavitary microconvex transducer for transvaginal examination, both with a frequency of 6.5 MHz. The inter-wave interval was 20 ± 4.4 and 22.5 ± 5.3 via TR and VT, respectively; the number of follicles per cohort was 5.21 ± 0.92 and 6.38 ± 1.26 for TR and TV, respectively (p=0.0011); the maximum diameter of follicles was 12.49 ± 3.57 mm for TR and 13.56 ± 3.91 mm for TV; the growth rate was 0.70 ± 0.35 and 0.67 ± 0.32 mm/day for TR and TV, respectively. The regression equation for the ratio of the maximum follicular diameter and duration of follicular wave via TR was y=0.89766x+6.5554 (R²=0.423) and for the TV route y=0.8466x+10.184 (R²=0.479). The duration of the follicular phases was similar between both techniques except for the dominance phase (10.2±3.19 days for TR and 8.67±2.46 for TV, p=0.0418). The relationship between the follicular diameter and the number of follicles detected showed a low negative correlation (R²=-0.0827 for TV and R²=-0.0876 for TR). In conclusion, the transvaginal endocavitary transducer makes it possible to determine with greater precision the characteristics of llama follicular dynamics in their recruitment, dominance and regression phases with overlapping of follicular waves as an important characteristic.

Heart Rate and Neurological Outcomes in Patients Undergoing Targeted Temperature Management

2020 ◽  
pp. 088506662098250
Author(s):  
Chad M. Conner ◽  
William H. Perucki ◽  
Andre Gabriel ◽  
David M. O’Sullivan ◽  
Antonio B. Fernandez
Keyword(s):  
Heart Rate ◽  
Positive Association ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Neurological Outcomes ◽  
Neurologic Outcomes ◽  
Resuscitation Guidelines ◽  
The Mean ◽  
The Impact ◽  
The Relationship

Introduction: There is a paucity of data evaluating the impact of heart rate (HR) during Targeted Temperature Management (TTM) and neurologic outcomes. Current resuscitation guidelines do not specify a HR goal during TTM. We sought to determine the relationship between HR and neurologic outcomes in a single-center registry dataset. Methods: We retrospectively studied 432 consecutive patients who completed TTM (33°C) after cardiac arrest from 2008 to 2017. We evaluated the relationship between neurologic outcomes and HR during TTM. Pittsburgh Cerebral Performance Categories (CPC) at discharge were used to determine neurological recovery. Statistical analysis included chi square, Student’s t-test and Mann-Whitney U. A logistic regression model was created to evaluate the strength of contribution of selected variables on the outcome of interest. Results: Approximately 94,000 HR data points from 432 patients were retrospectively analyzed; the mean HR was 82.17 bpm over the duration of TTM. Favorable neurological outcomes were seen in 160 (37%) patients. The mean HR in the patients with a favorable outcome was lower than the mean HR of those with an unfavorable outcome (79.98 bpm vs 85.67 bpm p < 0.001). Patients with an average HR of 60-91 bpm were 2.4 times more likely to have a favorable neurological outcome compared to than HR’s < 60 or > 91 (odds ratio [OR] = 2.36, 95% confidence interval [CI] 1.61-3.46, p < 0.001). Specifically, mean HR’s in the 73-82 bpm range had the greatest rate of favorable outcomes (OR 3.56, 95% CI 1.95-6.50), p < 0.001. Administration of epinephrine, a history of diabetes mellitus and hypertension all were associated with worse neurological outcomes independent of HR. Conclusion: During TTM, mean HRs between 60-91 showed a positive association with favorable outcomes. It is unclear whether a specific HR should be targeted during TTM or if heart rates between 60-91 bpm might be a sign of less neurological damage.

scholarly journals Analyzing the Effect of the Senior Management’s Support on the Relationship between Factors Affecting and Employees’ Performance in the Al-Zawiya University of Libya

2017 ◽  
Vol 13 (3) ◽  
pp. 42
Author(s):  
Nasreddin Ramadhan Dukhan ◽  
Norhisham Mohamad ◽  
Asbi B Ali
Keyword(s):  
Likert Scale ◽  
Factors Affecting ◽  
The Mean ◽  
Multiple Groups ◽  
Strongly Agree ◽  
The Impact ◽  
The Relationship ◽  
Variable Performance

This study aims to test the influence of the senior management’s support as a moderating variable on the relationship between the independent factors (Training, Empowerment, Motivation and Communication) and the dependent variable (Performance of Employees). (SEM-AMOS) is used to test the impact of the moderating variable. Where it is depended on the method of sampling or analysis of what is known as multiple-groups analysis. The paragraphs of the senior management’s support variable are collected and divided into two groups according to the mean of the total paragraphs. In addition, according to the relative weights given to the paragraphs of the questionnaire, using a five- point’s Likert scale: 1= strongly disagree to 5 = strongly agree. The first group consisted of the grades less than the mean and it is considered as the group which is non-supporters of the existence of support. While the second group consisted of the grades higher than the mean and considered as the group which is a supporter of the existence of support. The study found that the model of study in the presence of the support of the senior management’s is appropriate for the second group and inappropriate in light of the lack of support by the senior management’s support for the first group.

scholarly journals THE LUCK IN “TALENT VERSUS LUCK” MODELING

2020 ◽  
Vol 23 (03) ◽  
pp. 2050007
Author(s):  
SEAN ELVIDGE
Keyword(s):  
Mean Value ◽  
Maximum Amount ◽  
Random Numbers ◽  
Individual Parameter ◽  
Input Parameters ◽  
The Mean ◽  
Model Variability ◽  
The Impact ◽  
The Relationship

This paper further investigates the Talent versus Luck (TvL) model described by [Pluchino et al. Talent versus luck: The role of randomness in success and failure, Adv. Complex Syst. 21 (2018) 1850014] which models the relationship between ‘talent’ and ‘luck’ on the impact of an individuals career. It is shown that the model is very sensitive to both random sampling and the choice of value for the input parameters. Running the model repeatedly with the same set of input parameters gives a range of output values of over 50% of the mean value. The sensitivity of the inputs of the model is analyzed using a variance-based approach based upon generating Sobol sequences of quasi-random numbers. When using the model to look at the talent associated with an individual who has the maximum capital over a model run it has been shown that the choice for the standard deviation of the talent distribution contributes to 67% of the model variability. When investigating the maximum amount of capital returned by the model the probability of a lucky event at any given epoch has the largest impact on the model, almost three times more than any other individual parameter. Consequently, during the analysis of the model results one must keep in mind the impact that only small changes in the input parameters can have on the model output.

The Impact of Defense Investment on Economic Growth in the Perspective of Time Series

2014 ◽  
Vol 5 (4) ◽  
pp. 44-58
Author(s):  
Bin Pan ◽  
Shih-Yung Wei ◽  
Xuanhua Xu ◽  
Wei-Chiang Hong
Keyword(s):  
Economic Growth ◽  
Growth Rate ◽  
Private Investment ◽  
Investment Risk ◽  
Demand And Supply ◽  
Economic Growth Rate ◽  
Proposed Model ◽  
Endogenous Growth Model ◽  
The Impact ◽  
The Relationship

By considering the demand and supply effects of defense investment and the uncertainty of the stochastic process of the production and defense investment, this study proposes a stochastic endogenous growth model to explore the impact of defense investment on economic growth. The results suggest that the relationship between defense investment and economic growth rate is nonlinear and obtains the optimal percentage of defense investment to maximize economic growth. Moreover, the impact of defense investment volatility on economic growth rate is subject to production and defense investment interference term's covariance and representative private investment risk preference. Finally, the empirical data are used to illustrate the applicability of the proposed model.

Modelling patterns of parasite aggregation in natural populations: trichostrongylid nematode–ruminant interactions as a case study

Parasitology ◽  
1995 ◽  
Vol 111 (S1) ◽  
pp. S135-S151 ◽  
Author(s):  
B. T. Grenfell ◽  
K. Wilson ◽  
V. S. Isham ◽  
H. E. G. Boyd ◽  
K. Dietz
Keyword(s):  
Population Biology ◽  
Negative Binomial ◽  
Natural Populations ◽  
Parasite Load ◽  
Host Immunity ◽  
Moment Closure ◽  
The Mean ◽  
Parasite Aggregation ◽  
The Impact ◽  
The Relationship

SUMMARYThe characteristically aggregated frequency distribution of macroparasites in their hosts is a key feature of host–parasite population biology. We begin with a brief review of the theoretical literature concerning parasite aggregation. Though this work has illustrated much about both the sources and impact of parasite aggregation, there is still no definitive analysis of both these aspects. We then go on to illustrate the use of one approach to this problem – the construction of Moment Closure Equations (MCEs), which can be used to represent both the mean and second moments (variances and covariances) of the distribution of different parasite stages and phenomenological measures of host immunity. We apply these models to one of the best documented interactions involving free-living animal hosts – the interaction between trichostrongylid nematodes and ruminants. The analysis compares patterns of variability in experimental infections of Teladorsagia circumcincta in sheep with the equivalent wildlife situation – the epidemiology of T. circumcincta in a feral population of Soay sheep on St Kilda, Outer Hebrides. We focus on the relationship between mean parasite load and aggregation (inversely measured by the negative binomial parameter, k) for cohorts of hosts. The analysis and empirical data indicate that k tracks the increase and subsequent decline in the mean burden with host age. We discuss this result in terms of the degree of heterogeneity in the impact of host immunity or parasite-induced mortality required to shorten the tail of the parasite distribution (and therefore increase k) in older animals. The model is also used to analyse the relationship between estimated worm and egg counts (since only the latter are often available for wildlife hosts). Finally, we use these results to review directions for future work on the nature and impact of parasite aggregation.

scholarly journals Increased left atrial pressure in non-heart failure patients with subclinical hypothyroidism and atrial fibrillation

2016 ◽  
Vol 5 (3) ◽  
pp. 101-106 ◽  
Author(s):  
Akinori Sairaku ◽  
Yukiko Nakano ◽  
Yuko Uchimura ◽  
Takehito Tokuyama ◽  
Hiroshi Kawazoe ◽  
...  
Keyword(s):  
Heart Failure ◽  
Atrial Fibrillation ◽  
Subclinical Hypothyroidism ◽  
Left Atrial ◽  
Structural Heart Disease ◽  
Thyroid Stimulating Hormone ◽  
The Mean ◽  
V Wave ◽  
The Impact ◽  
The Relationship

Background The impact of subclinical hypothyroidism on the cardiovascular risk is still debated. We aimed to measure the relationship between subclinical hypothyroidism and the left atrial (LA) pressure. Methods The LA pressures and thyroid function were measured in consecutive patients undergoing atrial fibrillation (AF) ablation, who did not have any known heart failure, structural heart disease, or overt thyroid disease. Results Subclinical hypothyroidism (4.5≤ thyroid-stimulating hormone <19.9 mIU/L) was present in 61 (13.0%) of the 471 patients included. More subclinical hypothyroidism patients than euthyroid patients (55.7% vs 40.2%; P=0.04).’euthyroid patients had persistent or long-standing persistent AF (55.7% vs 40.2%; P = 0.04). The mean LA pressure (10.9 ± 4.7 vs 9.1 ± 4.3 mmHg; P = 0.002) and LA V-wave pressure (17.4 ± 6.5 vs 14.3 ± 5.9 mmHg; P < 0.001) were, respectively, higher in the patients with subclinical hypothyroidism than in the euthyroid patients. After an adjustment for potential confounders, the LA pressures remained significantly higher in the subclinical hypothyroidism patients. A multiple logistic regression model showed that subclinical hypothyroidism was independently associated with a mean LA pressure of >18 mmHg (odds ratio 3.94, 95% CI 1.28 11.2; P = 0.02). Conclusions Subclinical hypothyroidism may increase the LA pressure in AF patients.

scholarly journals Structural Transformation of Economy in Special Region OF Yogyakarta

2017 ◽  
Vol 19 (3) ◽  
pp. 360
Author(s):  
Nur Feriyanto
Keyword(s):  
Growth Rate ◽  
Structural Transformation ◽  
Development Planning ◽  
Economic Transformation ◽  
Economic Sectors ◽  
The Third ◽  
The Government ◽  
The Impact ◽  
The Relationship ◽  
Special Region

The first aim of this study was to determine the relationship between the growth rate of GRDP and the growth rate of sectors’ labor absorption in Special Region of Yogyakarta. The second objective was using the Esteban Marquillas’ Shift-Share analysis to prove whether there has been a structural transformation of the economy in Special Region of Yogyakarta during 2009-2014. The third aim was to determine the impact of economic sectors’ growth in Indonesia on the growth of aggregate GRDP in Special Region of Yogyakarta.  Results of this study were: (1) There were three conditions used to observe the relationship between the growth rate of GRDP and the growth rate of labor absorption in Special Region of Yogyakarta namely anomalous; regressive; and progressive. (2) The use of Esteban Marquillas’ Shift-Share analysis showed that in the area of Special Region of Yogyakarta there had been a shift in the economic structure from the primary sector to the secondary and tertiary sectors. (3) The economic sectors’ growth in Indonesia could lead to the growth of aggregate GRDP in Special Region of Yogyakarta as much as 539.53 billion IDR. Suggestions offered by this research are as follows: (1) policy making by the government related to development has to pay attention to the relationship between economic growth and unemployment rate. (2) Government has to address the economic transformation from primary to tertiary sectors; especially for development planning; and (3) government needs to focus on economic development for the dominant sectors of economy in DIY province.

scholarly journals The Impact of using social media in a sample of Iraqi medical students in 2019

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Ali Almawashee ◽  
Qaswer Yousif ◽  
Karrar Ali Idan
Keyword(s):  
Social Media ◽  
Medical Students ◽  
Online Survey ◽  
Educational Values ◽  
Research Committee ◽  
Cross Sectional ◽  
The Mean ◽  
Use Of Social Media ◽  
The Impact ◽  
The Relationship

Abstract Background:  Social media are tools that supports electronic conversation. suggested , social media are “a group of internet-based applications that build on the ideological and technological foundations of Web 2.0, that allow the creation and exchange of User Generated Content. Aim of the study: Is to identify the pattern of usage of social media among a sample of Iraqi medical students including the devices used, the time consumed, and   the purpose of usage. Materials &Methods: The study, which is a retrospective cross-sectional, was conducted among medical students at college of Medicine\Baghdad University at 2019 as an online survey for duration of 3 months Data was entered and analyzed using spss version 24.Informed consent was obtained from the participants and the study was approved by the research committee in the college. Results The mean age of the participants in this study was 20.8 with sd 1.78. Results had shown no significant association between the usefulness of social media for educational values and type of social media, device used, and the time spent on these media. Results had shown that those who use social media more frequently were not significantly worried about the potential of social media abuse. Conclusions A study exploring more objectively the relationship between students’ use of social media with their academic achievements and what sort of social media interventions associated with better learning are probably needed. Such knowledge may be useful to guide medical educators to better utilize social media in their instructional strategies.

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